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/*------------------------------------------------------------------------
* Copyright 2009 (c) Jeff Brown <spadix@users.sourceforge.net>
*
* This file is part of the ZBar Bar Code Reader.
*
* The ZBar Bar Code Reader is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* The ZBar Bar Code Reader is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with the ZBar Bar Code Reader; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* http://sourceforge.net/projects/zbar
*------------------------------------------------------------------------*/
#include "window.h"
#include <vfw.h>
extern int _zbar_window_bih_init(zbar_window_t *w, zbar_image_t *img);
static int vfw_cleanup(zbar_window_t *w)
{
if (w->hdd) {
DrawDibClose(w->hdd);
w->hdd = NULL;
}
return (0);
}
static int vfw_init(zbar_window_t *w, zbar_image_t *img, int new_format)
{
if (new_format)
_zbar_window_bih_init(w, img);
w->dst_width = w->bih.biWidth = (img->width + 3) & ~3;
w->dst_height = w->bih.biHeight = img->height;
HDC hdc = GetDC(w->hwnd);
if (!hdc)
return (-1 /*FIXME*/);
if (!DrawDibBegin(w->hdd, hdc, w->width, w->height, &w->bih, img->width,
img->height, 0))
return (-1 /*FIXME*/);
ReleaseDC(w->hwnd, hdc);
return (0);
}
static int vfw_draw(zbar_window_t *w, zbar_image_t *img)
{
HDC hdc = GetDC(w->hwnd);
if (!hdc)
return (-1 /*FIXME*/);
zprintf(24, "DrawDibDraw(%dx%d -> %dx%d)\n", img->width, img->height,
w->width, w->height);
DrawDibDraw(w->hdd, hdc, 0, 0, w->width, w->height, &w->bih,
(void *)img->data, 0, 0, w->src_width, w->src_height,
DDF_SAME_DRAW);
ValidateRect(w->hwnd, NULL);
ReleaseDC(w->hwnd, hdc);
return (0);
}
static uint32_t vfw_formats[] = { fourcc('B', 'G', 'R', '3'),
fourcc('B', 'G', 'R', '4'),
fourcc('J', 'P', 'E', 'G'), 0 };
int _zbar_window_vfw_init(zbar_window_t *w)
{
w->hdd = DrawDibOpen();
if (!w->hdd)
return (err_capture(w, SEV_ERROR, ZBAR_ERR_UNSUPPORTED, __func__,
"unable to initialize DrawDib"));
uint32_t *fmt;
for (fmt = vfw_formats; *fmt; fmt++)
_zbar_window_add_format(w, *fmt);
w->init = vfw_init;
w->draw_image = vfw_draw;
w->cleanup = vfw_cleanup;
return (0);
}
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